Measurement and analysis of Physiological tremor with Electromyography

Abstract

Tremor is unwanted, repetitive movement of some part of the body. Physiological tremor occurs due
to fatigue or neurological diseases. Tremor in the hands of the surgeon due to fatigue is a matter of
concern in robotic surgery. This tremor should not get transferred to the tool side while surgery is in
progress. Therefore, it is required to detect the tremor and suppress it. In this work, measurement and
analysis of physiological tremor with surface electromyography (sEMG) in both time and frequency
domain has been presented. The tremor in the frequency range of 3-15 Hz was extracted and analysed.
Results show the increase in signal amplitude in time domain during tremor state with respect to
relaxed position. Frequency domain analysis shows an increase in maximum frequency and decrease
in mean frequency of signal during tremor state.